By Georg Mascolo and
Ronen Steinke, Berlin
On the evening of September 18, a six-pack of beer was angrily pounded on the counter at an Aral gas station in Idar-Oberstein. You can study this scene on a video, the investigators in Rhineland-Palatinate did that and watched over and over again exactly how a 49-year-old man, Mario N., started an argument there. Because he wanted to buy beer but was told by the cashier that he had to wear mouth and nose protection.